Riding ring for rotary cylinders



Feb. 27, 1951 c, PATTEN 2,543,595

RIDING RING FOR ROTARY CYLINPERS I Filed March 25, 1949 2 Sheets-Sheet 1I l O O 0, /7 /6 20 7 Charles H .Pa tten YMM Feb. 27, 1951 c. H. PATTEN2,543,595

RIDING RING FOR ROTARY CYLINDERS Filed March 25, 1949 2 Sheets-Sheet 2 2Chafles JLBa/Z'Z'en, A 941%) MW ATTO R N EY5.

Patented Feb. 27, 1951 2,543,595.- ammo RING FOR ROTARY CYLINDERSCharles H. Patten, Allentown, Pa, assignor to Traylor' Engineering andManufacturing Company, Allentown, Pa., a corporation of DelawareApplication March 25, 1949, Serial No. 83,492- Claims. (01. soc-20.4),

The present. invention relates to riding rings for rotary cylinders.

This application is a continuation-in-part of my co-pending applicationSerial No. *7 49 613', filed May 21, 1947.

Rotary cylinders, such as the shells of rotary kilns, coolers,drl'ersand grinding mills, are pro-- vided with a plurality of ridingrings which rotate in fixed bearing elements to thereby rotatablysupport the cylinders. It has heretofore been the practice to-iorm eachriding ring of one piece of material and apply the rings by sl-idingthem endwise along the cylinders. As a result, initial application of aring, as well as replacement, involves a considerable period of time andlabor.

An important obiect of'the present invention is to provide a riding ringformed in sections so that it more readily can be applied to a cylinder.A further object of the present invention to provide a novel means formounting ariding ring on a cylinder.

Other objects and advantages of the invention will be apparent from thefollowing specification and accompanying drawings, wherein Figure l is aside view of a ring, the view showing a cylinder in transverse section,

Figure 2- is a radial section through the ring and cylinder oiFigure 1,the viewbeing takenon the angled line 2 -2- of Figure l,

Figure 3 is a fragmentary face view of the ring of Figures 1 and 2, i.e., the view {looking toward the ring in a radial direction and fromvabove Figure l,

Figure 4 is a detailed section on the line 4-1 of Figure 3, e

Figure 5' is an elevation view of amodifi'ed form of a ring and amodified means for mounting the ring on cylinder,

Figured is a fragmentary face view of the. ring showninfflFigure 5'.

Figure '1 is a sectional view taken on the line 1-1 of Figure 6 and,

Figure 8 is a sectional view taken on. the line 8-8 ofFigure- 6.

Referring to- Figures 1 to 4,, the numeral In. designates arotarycylinder suclj'g as is provided in a. calciningor; a similar structureand the numeral? generally designates the riding ring. The ring H; isillustrated as termed of two sec-- tions: i2 and [3, each ofwhichcomprises half oiv an annulus. However, it will be; understood thatthe ring Ill may be formed of a greater number of sections. Eachsection. includes sidewalls l4 and I5; ing in radial planes and flangesMo and:

2 I So are provided at the inner edges of the respective walls.

As" is best indicated in Figure 3, adjoining ends of the sections I2.and [3 are provided with cooperating or inter-engaging hook elements 16and Il, respectively. In more detail, each end of the section 1 2terminates in an extension, or shank, IGa of less axial width than thebody of the section 12 having parallel side walls. At its outer endshank Ilia carries an integral head portion Eb which has a greater axialWidth than the shank ltd. The inside face IEO of head 16b lies in aradial plane and the side face 15d of the head lies in a plane parallelto the side walls I4 and 15. As best shown in Figure 4, the walls Iceand "if are formed by radii so that opposed surfaces of the hookelements ['6' and H can engage each other. However, as shown in Figure3, the outer face Hie: of head IEb also extends at an obtuse angle withrespect to the side wall l5 of the section I2. Also, theangle betweenthe end wall It)" of section l2 and the. side wall I4 is complementaryto the angle between lie and side wall [5.

It will be understood that the face [60 lies in a plane radial of theaxial center of the section l2 and, therefore, will lie in a planeradial with respect to the axis of the cylinder Ill.

The hook 11 provided on the section I3 has a form identical with that ofthe hook element i6 and parts of hook I! corresponding to like parts ofhook I 6 bear reference characters including the. same exponentialletters". However, it will be understood that the hooks at the oppositeends of. each section [2 and I3 will be laterally displaced. That is,and as indicated in Figure 1,

the hook [6' at the opposite end of the section I I will be axiallydisplaced with regard to the hook l6. shown. in. Figures. By thisarrangement, the adjacent hooks of two sections will fit together ina.complementary manner as best shown in Figure 3.

As is clear from Figure 3, the shanks 'ifi'a and Ho are of greaterlength circumferentially of the ring than the heads I66 and lib, therebyproviding' a space between the inner faces and lie of the heads and theinside walls 16g and Hg of Hence, by first 3 the two hooks l6 and l! andthen forcing the other wedge I8 in between wedge l9 and the inner facelfic of hook head lBb, the two sections will be held together.

It will be observed that surfaces I60 and He comprise detent surfacesacting to hold the sections against circumferential movement, and thatsurfaces 156 and I6) of hook i6 as well as the opposed surfaces of hookll, form detent surfaces which hold the sections against circumferentialand axial, or lateral, movement with respect to each other.

As is indicated at 25 in Figures 2, 3 and 4, the radially outward edgesof all of the surfaces of the hooks and wedges may be bevelled so that 4ing ends of the sections 52 and 53 are provided with cooperating orinterengaging hook elements 56 and 51 respectively. Each end of thesection 52 terminates in an extension or shank 56a of a width in adirection paralel to the axis of the cylinder less than the width of thebody of the section 52 having parallel side walls. At its outer end theshank 55a carries an integral head portion 56b. The outer end face 566and the inside face 550 of the head portion 56b and also the wall 55]are substantially parallel and are disposed at an, angle with respect tothe axial direction of the cyinder 50. The side face 56d of the head 56bandv the side face 56g of the after the sections have been assembled asdescribed above, they can be welded. -Any .pro-

tuberances can be ground off so that theci'r'cumf ferential and sidesurfaces of the completed ring show only four plates 24 surrounding thecylinder,

it will be obvious that the number of plates may be greater or lessexcept that it is desirable to use at least two pates so that theycanzbe fitted upon the cylinder without the necessity of sliding themlengthwise of the cylinder.

As will be observed from Figure 2, the inner surface of each section ofthe ring is inclinedadjacent its side edges, as indicated at 22 and 23.In other words, the inner surface of the ring diverges away from thecylinder toward the side These divergent surfaces edges of the ring.operate with inclined wedges or shims-24 forced in from opposite sidesof the ring between the ring and the plates 2!. The shims as: may berelatively short in a circumferential direction. After the shims 25 havebeen fitted in place, rivets 25 may be passed through al gned aperturesin the flanges Ma and 55a of the ring sec-V tions, shims 24, p ates 2|and the wall of the cylinder in, and then headed.

Instead of the arrangement of shims 24 and plates 2i just described tosecure the ring 1 i to the cylinder Hi, the arrangement disclosed in theapplication of Richard Bernhard for Riding Ring Mounting for RotaryCylinders, Serial No." 6931599, filed August 28, 1946. now Patent Number2,449,198 issued September 14 1948- may be used.-

If the arrangement of the Bernhard application isused, the innersurfaceof the ring sectionswould be cylindrical instead of inclined asindicated at 23 and 24 in Figure 2.;--

Referring to'Figuresfi to 8, the numeral designat s a rotary cylindersimilar to the above described cylinder ID. The numeral 5| generallydesignates a modified form of riding ring. The ring 5| is illustrated asformed of two sections 52 and 53, each of which compriseshalf of anannulus.

and lying in radial planes. Unlike the modification shown in Figures 1to i, the sections 52, 53 are substantially rectangular in cross sectionas shown in Figure '7 and are not provided with flanges.

The support--- However, it will be understood that the ring 5| may beformed of a greater number; of sections. Each section includessideavalls 5e;-

.Bei rr napar c lar y-tefisi re elite celeb 1: l 75 shank 58a. aresubstantially parallel and are perpendicularly disposed with respect tothe faces -or walls 566, 56c and 56 The edge 56h formed bythintersectioi'l of faces 56c and 5611 is 'rounded as is also the edge569' formed by the intersection of faces 55 and 550.

As best seen in Fi ure 8,- the walls orfaces 55c, 55c and 56 lie inplanes radially extending from the axial center ofthe section 52 andtherefore, will lie in planes radial with respect to the axis of thecylinder 55. Y r

The hook'51, provided on the sec ion 53, has a form identical with thatof the hook element 56 and parts of hook 55 bear reference charactersincluding 'thesame exponential letters.

However, it will be understood that the hooks at the oppositeendsof'sections 52- and 53 will be radially displaced in the samemanneres above described with respecttoy sections12 and I3.

. The shanks 56a and EIa-are of greater lengthin a directioncircumferentiallyrof the ring than the heads 5% and 5ib'so as'to pro idea s ace between the inner faces 55c and 570 of the heads and the insidewalls 550 and 51g of the shanks. Wedge 55 and 59 are forced into thisspace to secure the sections together against relative axial andcircumferential movement.

-As shown in Figure 8. the opposed faces of the wedges (indicated at6'!) are inclined with respect to radius of the-ring in the same manneras above described with'respect to wedges l8 and [9. Durin assembly, thewedge 59 is first inserted in the space or pocket between the two hooks56 and 51 and then the wedge 58 is forced in between wed e 59 and theinner face 560 of the hook head 55b so as to-hold the two sectio 52 and53 together.v s i a he d a outward-edges of-all of the surfaces of thehooks and wedges may be bevelled,

as indicatedat 6!] in Figure}, whereby the sections may be welded afterassembly. The weldinrrridges may then be groundofi. so. as to providethat. the circumferential and side surfaces of the completed ring besmooth-and circular.

,Themeans for supporting the ring .5! on the cylinder 50 comprisesa"'p1urality' 0f plates 6! of from each'other circur'nferentially aroundthe cylinder- 55' but' 'it' will'b'e understood that they may? :beplaced "in: contiguous? abutting relation '1 asiaretheplate's 21:. eThe"plat'es '61 are prefer-' ably secured to'thering 50 by welding as at62.

Retainer bars 63 and are secured .to the plates 6| by welding as at 65and 66, respectively. Each of the retainer bars 53,-64: may be in theform 9 ;?z ;;1 5E 3:1; E 213 eaiee l ia ir umier i l r 2 around thecylinder but preferably each bar is in the form of an arcuate segmentand a plurality of such segments are secured to the plates 6| so as toform an annular retainer collar adjacent each of the side walls 54, 55of the ring 5|. By thus providing that the retainer bars be in the formof segments rather than one integral circular pire, the necessity forsliding the bars axially of a long cylinder will be obviated duringassembly.

As shown in Figure '7, the inner side walls 61 and 68 of the retainerbars 63 and 64 extend in radial planes and abut, respectively, the ringside walls 54 and 55 so as to retain the ring against axialdisplacement. It will be noted that the inner cylindrical surface 69 ofthe ring is of a diameter slightly greater than the exterior cylindricalsurface formed by the series of circumferentially disposed plates 6|.There is thus provided a clearance between surfaces 69 and 10 so as toallow for thermal expansion of the cylinder 50. The side walls 54, 55 ofthe ring and the retaining walls 61, 68 of the retainer bars 63, 64 aresubstantially smooth and planar and it will be obvious that the ring 5|will be freely rotatable with respect to the cylinder 50 until thermalexpansion of the cylinder 50 eliminates the clearance between surfaces69 and 10 so as to provide a press fit between the ring 5| and theplates 6|.

It will be understood that instead of the arrangement just described tosecure the ring 5| to the cylinder 50, either of the arrangementsdisclosed in my co-pending application Serial No. 749,613 or thearrangement shown in Figures 1 and 2 of this application, or that shownin the Bernhard Patent No. 2,449,198, September 14, 1948, may be used.It will also be understood that the arrangement shown in Figure '7 forsecuring the ring 5| to the cylinder 50 may be used to mount the ring llof Figures 1 to 4 upon the cylinder l0.

As is indicated in Figures 1 to 4, the ring sections I 2, I 3 are shownto be hollow and provided with air passages and apertures and it will beunderstood that the ring sections 52, 53 may be similarly formed if sodesired.

By providing that the detent surfaces 560, 510 are at an acute anglewith respect to the circumferential center-line of the ring, rather thanperpendicular to the center-line as shown by detent surfaces I60, He,the modified structure of Figures 5 to 8 eliminates all shoulders on theouter surface of the ring in a direction directly transverse to thedirection of movement of the ring surface. It will thus be seen that asthe shoulder formed by surface 56c or 51c moves into contact with aroller or other supporting means of the fixed bearing, only a limitedlength of the shoulder will be in contact with the roller at anyparticular instant. However, if the shoulders are transverse as shown inFigures 1 to 4,

the entire length of the shoulder will contact the rollerinstantaneously as the rotation of the cylinder causes the shoulder toarrive at the position of the roller, rather than the gradual limitedcontact that is obtained in the modified structure of Figures 5 to 8. Itwill be obvious that the acute-angled position of the detent surfaces560, 51c tends to provide in effect a smoother cylinder bearing surfaceand tends to eliminate vibration and jarring during rotation of thecylinder, while at the same time obviating the necessity for extremelysmall tolerances when grinding the shoulders and welding materialthereon down to the cylindrical surface of the ring.

The terminology used in the specification is for the purpose ofdescription and not limitation, the scope of the invention beingindicated in the claims,

I claim:

1. A rotary cylinder riding ring comprising a plurality of arcuatesections, the sections having their adjacent ends provided withrespectively complementary hooks, each of said hooks including a shankportion having inner and outer side walls which is an extension of thering section and a head at the outer end of the shank, said shankshaving a greater length longitudinally of the ring section than thecorresponding length of said heads, the outer surface of each head beinginclined relative to the intersected outer side wall of said shank at anobtuse angle, each of said heads including a detent surface which liesat substantially a right angle to the intersected inner shank side wall,and securing means insertable between opposed detent surfaces to forcesaid hooks together into locking engagement with each other.

2. The combination set forth in claim 1, wherein said securing meanscomprise complementary wedges.

3. The combination set forth in claim 1, wherein the inner annularsurface of the ring diverges outwardly and away from the cylinder onwhich the ring is to be mounted and toward the side edges of the ring,and arcuate inclined wedges adjacent said divergent inner surface andadapted to be mounted on the cylinder for supportably mounting the ringthereon.

4. The combination set forth in claim 1, wherein the inner annularsurface of the ring is in the form of a cylinder having a largerdiameter than the diameter of the cylindrical supporting means on whichthe ring is to be mounted so as to provide clearance for thermalexpansion of the cylinder, and annular retainer means adapted to besecured to the cylinder and abutting both side walls of the ring so asto limit axial dislacement of the ring with respect to the cylinder, theabutting surfaces of said retainer means and said ring side walls beingsmooth and planar so as to allow the ring to rotate freely with respectto the cylinder.

5. The combination set forth in claim 1, wherein the inner shank sidewalls intersected by the detent surfaces are inclined relative to thecircumferential center line of the ring by an angle which is less than aright angle.

CHARLES H. PATIEN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 428,058 Richards May 13, 18902,132,321 Rice Oct. 4, 1938 FOREIGN PATENTS Number Country Date 146,580Great Britain July 5, 1920

